Fresh air mechanism of passenger car overhead air conditioner

Abstract

The fresh air mechanism comprises a fan, the output end of the fan is connected with a filtering device, the filtering device comprises an air bellow, a cover plate, a filtering plate and a filter, the cover plate is installed on one side of the air bellow, the filter is installed below the filtering plate, a quick clamping device is arranged on one side of the cover plate, and an air outlet pipe is arranged at the output end of the air bellow. One end of the air outlet pipe is connected with an adjusting device, the adjusting device comprises a fixing pipe, a motor, a driving wheel, a driven wheel, a rotating sleeve, an inner gear, an outer gear, a connecting plate, a threaded sleeve, an ejector rod, a conical spring, a flow stopping block, a push spring, a fixing plate and an ejector block, the motor is connected with the driving wheel, the driven wheel is arranged on the outer side of the rotating sleeve, the rotating sleeve sleeves the other end of the fixing pipe, and the inner gear is connected to the inner side of the rotating sleeve; the outer gear is arranged on the outer side of the threaded sleeve, the connecting plate is arranged in the fixing pipe, the threaded sleeve is installed on the connecting plate, the ejector block is connected with the flow choking block through the conical spring, and the two ends of the push spring are connected with the fixing plate and the flow choking block respectively.

Description

Technical Field

[0001] The utility model relates to the technical field of a fresh air mechanism of a roof-mounted air conditioner of a bus, and more specifically, relates to a fresh air mechanism of a roof-mounted air conditioner of a bus. Background Art

[0002] In the current technical practice of the roof-mounted air conditioning system of buses, the operation of the fresh air mechanism is mainly to introduce fresh air from outside the car into the interior of the car through a fan. Although this process is necessary to keep the air in the car flowing and fresh, there are also some problems. The existing technical means have certain deficiencies in the following aspects:

[0003] First of all, when the outside air is directly introduced, since the air generally contains impurities and foreign matter such as dust, pollen, and bacteria, these substances are sent into the car without proper treatment, which will not only reduce the air quality but also may have an adverse effect on the health of the passengers.

[0004] Secondly, in order to solve this problem, some existing fresh air mechanism designs have added filters and other components to remove impurities in the air. However, the disassembly and maintenance processes of these filters are often complicated and cumbersome. In actual operation, due to the installation position and structural design limitations of filters and other components, it is difficult for technicians to replace and maintain them quickly and conveniently, which not only increases maintenance costs, but may also cause the air-conditioning system to fail to work normally for a period of time, affecting passenger comfort and driving safety.

[0005] In addition, in the prior art, fresh air is usually delivered to the interior of the vehicle through a certain form of pipes. However, the structural design of these pipes mostly adopts a smooth inner wall. Although this design can reduce the resistance to air flow, it lacks the ability to flexibly adjust the air flow rate. In practical applications, this may cause the following problems: Under different climatic conditions, passengers' demand for air flow rate may vary. Smooth pipes cannot adjust the air flow rate according to demand, resulting in the inability to meet the comfort requirements of all passengers. In some cases, such as when the outside air quality is poor, it may be necessary to reduce the speed of fresh air introduction to reduce the entry of pollutants, but the pipe structure of the prior art limits the flexibility of this adjustment. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] In view of the problems existing in the prior art, the utility model provides a fresh air mechanism for a roof-mounted air conditioner of a passenger car to solve the technical problems mentioned in the background technology.

[0008] (II) Technical solution

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fresh air mechanism of a passenger car roof air conditioner, comprising a fan, the fan output end is connected to a filter device, the filter device comprises a bellows, a cover plate, a filter plate and a filter, the cover plate is detachably mounted on one side of the cover plate, the filter plate is detachably mounted in the bellows, the filter is detachably mounted below the filter plate, a quick-clamp device is arranged on one side of the cover plate, an air outlet pipe is arranged on the output end of the bellows, one end of the air outlet pipe is connected to an adjustment device, the adjustment device comprises a fixed pipe, a motor, a driving wheel, a driven wheel, a rotating sleeve, an internal gear, an external gear, a connecting plate, a screw sleeve, a push rod, a conical spring , a baffle, a push spring, a fixed plate and a top block, the fixed pipe is connected to one end of the air outlet pipe, the motor is detachably mounted on one side of the fixed pipe, the motor output end is connected to the driving wheel, the driven wheel is fixedly arranged on the outside of the rotating sleeve, and the driven wheel is meshed with the driving wheel, the rotating sleeve is movably sleeved on the other end of the fixed pipe, the internal gear is fixedly connected to the inside of the rotating sleeve, the external gear is fixedly arranged on the outside of the screw sleeve, and the internal gear and the external gear are meshed, the connecting plate is fixedly arranged in the fixed pipe, the screw sleeve is movably mounted on the connecting plate, the top block is connected to the baffle through a conical spring, and the two ends of the push spring are respectively connected to the fixed plate and the baffle.

[0010] The utility model is further configured that a matching groove is provided in the fixed pipe, the baffle block is slidably arranged in the matching groove, and the matching groove is an inclined structure.

[0011] The utility model is further configured that a limiting plate is provided in the fixing tube, and the push rod slides through the limiting plate.

[0012] The utility model is further configured that a sliding block is provided on the inner side of the limiting plate, a sliding groove is provided on the outer side of the push rod, and the sliding block is adapted to the sliding groove.

[0013] The utility model is further configured such that the quick-clip device includes a mounting sleeve, a mounting plate, a fixing rod and an elastic plate; the mounting sleeve is fixedly connected to one side of the cover plate; the mounting sleeve has a threaded groove; the mounting plate is fixedly mounted on both sides of the bellows; the fixing rod passes through the mounting plate and is inserted into the mounting sleeve; the elastic plate is arranged on the side wall of the fixing rod along the threaded line; the configuration of the quick-clip device realizes the quick installation of the cover plate.

[0014] The utility model is further configured that a release sleeve is sleeved on the outer side of the fixing rod, a release groove is opened on the side wall of the release sleeve, and the release groove corresponds to the position of the elastic plate.

[0015] The utility model is further configured that a spring is provided at one end of the release sleeve, and the other end of the spring is connected to the fixing rod.

[0016] The utility model is further configured that a handle is provided at one end of the release sleeve, and the handle slides through the top end of the fixing rod.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the utility model provides a fresh air mechanism for a roof-mounted air conditioner in a passenger car, which has the following beneficial effects:

[0019] 1. The filtering device effectively solves the problems caused by directly introducing outside air. It forms a multi-level filtering system through modular design, including components such as bellows, cover plate, filter plate and filter. First, the filter plate can capture large particles of dust and foreign matter to prevent them from entering the interior of the car. Secondly, the filter further filters out finer particles to ensure that the delivered air is cleaner. This design significantly improves the air quality and reduces the risk of passengers being exposed to harmful substances, thereby protecting the health of passengers.

[0020] 2. The quick-release device realizes a quick-release mechanism through components such as the mounting sleeve, mounting plate, fixing rod and elastic plate. The operator can quickly release the cover by pulling the handle, and the filter can be replaced and maintained without tools. This design significantly improves maintenance efficiency and reduces labor intensity. It can also be easily operated even in limited space, greatly simplifying the maintenance process and improving the reliability and availability of the system.

[0021] 3. The regulating device realizes precise control of the fresh air flow rate through multiple components such as the driving wheel, the driven wheel, the screw sleeve and the push rod. The motor drives the driving wheel and the driven wheel to rotate, and then drives the inner gear and the outer gear to rotate synchronously through the rotating sleeve. The threaded push rod and the slider slot mechanism push the baffle to move, change the cross-sectional area of ​​air circulation, and thus adjust the air flow rate. This design allows the bus roof-mounted air-conditioning system to flexibly adjust the fresh air supply according to different environments and passenger needs, thereby improving passenger comfort and the overall performance of the system, greatly enhancing the flexibility and adaptability of the system, and improving user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of a fresh air mechanism of a roof-mounted air conditioner for a passenger car in the utility model;

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure in the utility model;

[0024] Figure 3 It is a cross-sectional structural diagram of the quick card device part of the utility model;

[0025] Figure 4 It is a cross-sectional structural diagram of the adjusting device part in the utility model;

[0026] Figure 5 for Figure 4 A schematic diagram of the local enlarged structure at point A in the middle;

[0027] Figure 6 for Figure 4 Schematic diagram of the local enlarged structure at point B in the middle.

[0028] In the figure: 1. fan; 2. bellows; 3. cover plate; 4. filter plate; 5. filter; 6. air outlet pipe; 7. fixed pipe; 8. motor; 9. driving wheel; 10. driven wheel; 11. rotating sleeve; 12. internal gear; 13. external gear; 14. connecting plate; 15. screw sleeve; 16. ejector rod; 17. conical spring; 18. baffle block; 19. push spring; 20. fixed plate; 21. ejector block; 22. matching groove; 23. limit plate; 24. slider; 25. slide groove; 26. mounting sleeve; 27. mounting plate; 28. fixing rod; 29. ​​elastic plate; 30. release sleeve; 31. release groove; 32. spring; 33. handle. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0031] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0032] See also Figure 1-6A fresh air mechanism for a passenger car roof air conditioner comprises a fan 1, an output end of the fan 1 is connected with a filtering device, the filtering device comprises a bellows 2, a cover plate 3, a filter plate 4 and a filter 5, the cover plate 3 is detachably mounted on one side of the cover plate 3, the filter plate 4 is detachably mounted in the bellows 2, the filter 5 is detachably mounted below the filter plate 4, a quick-clamp device is arranged on one side of the cover plate 3, an air outlet pipe 6 is arranged at the output end of the bellows 2, one end of the air outlet pipe 6 is connected with an adjusting device, the adjusting device comprises a fixing pipe 7, a motor 8, a driving wheel 9, a driven wheel 10, a rotating sleeve 11, an inner gear 12, an outer gear 13, a connecting plate 14, a screw sleeve 15, a push rod 16, a conical spring 17, a baffle block 18, a push spring 19, a fixing plate 2 0 and top block 21, the fixed pipe 7 is connected to one end of the air outlet pipe 6, the motor 8 is detachably installed on one side of the fixed pipe 7, the output end of the motor 8 is connected to the driving wheel 9, the driven wheel 10 is fixedly arranged on the outside of the rotating sleeve 11, and the driven wheel 10 is meshed with the driving wheel 9, the rotating sleeve 11 is movably sleeved on the other end of the fixed pipe 7, the internal gear 12 is fixedly connected to the inside of the rotating sleeve 11, the external gear 13 is fixedly arranged on the outside of the screw sleeve 15, and the internal gear 12 and the external gear 13 are meshed, the connecting plate 14 is fixedly arranged in the fixed pipe 7, the screw sleeve 15 is movably installed on the connecting plate 14, the top block 21 is connected to the baffle block 18 through the conical spring 17, and the two ends of the push spring 19 are respectively connected to the fixed plate 20 and the baffle block 18.

[0033] A matching groove 22 is provided in the fixed tube 7 , and the baffle block 18 is slidably disposed in the matching groove 22 , and the matching groove 22 is an inclined structure.

[0034] A limiting plate 23 is provided in the fixing tube 7 , and the push rod 16 slides through the limiting plate 23 .

[0035] A slider 24 is disposed on the inner side of the limiting plate 23 , and a slide groove 25 is disposed on the outer side of the push rod 16 , and the slider 24 is matched with the slide groove 25 .

[0036] In this embodiment, when it is necessary to use the device to transport fresh air to the interior of the bus, the fan 1 is first turned on, and the fan 1 draws fresh air from the outside into the bellows 2. The air entering the bellows 2 will first be filtered by the filter plate 4 to filter out large particles of dust and other foreign matter, and then the air that has been initially filtered will be filtered by the filter 5 to filter out some fine particles, thereby ensuring the cleanliness of the transported air, and then it will be transported to the bus through the air outlet pipe 6. When it is necessary to adjust the fresh air flow rate in the pipe according to demand, the motor 8 is turned on, and the motor 8 drives the driven wheel 10 to rotate through the driving wheel 9 connected to the output end, and then the driven wheel 10 will drive the internal gear 12 to rotate through the rotating sleeve 11, and then the internal gear 12 arranged on the inner side of the rotating sleeve 11 will drive multiple external gears 13 to rotate synchronously, and then the external gear 13 will drive the screw sleeve 15 to rotate. The movably installed in the screw sleeve 15, and the setting of the slider 24 and the slide groove 25 limit the push rod 16, and then the push rod 16 will slide along the slider 24 and the slide groove 25, and then the push rod 16 will gradually push the baffle block 18 to slide, and then the baffle block 18 will slide along the matching groove 22, and at the same time, the baffle block 18 will cooperate with the fixed plate 20 to squeeze the push spring 19. Due to the inclined structural design of the matching groove 22, the baffle block 18 will simultaneously move inward during the sliding process, and then multiple top blocks 21 will gradually come together, and then the conical spring 17 connected to one end of the top block 21 will be compressed, so that the gap between the conical springs 17 will gradually narrow, thereby changing the passage area of ​​fresh air, and at the same time, the movement of the baffle block 18 will gradually reduce the cross-sectional area of ​​the corresponding position in the fixed pipe 7, thereby further limiting the passage flow rate of fresh air. After adjusting to a suitable flow rate, the motor 8 can be turned off.

[0037] See also Figure 1 and Figure 3 As an implementation method of the quick-clip device: the quick-clip device includes a mounting sleeve 26, a mounting plate 27, a fixing rod 28 and an elastic plate 29. The mounting sleeve 26 is fixedly connected to one side of the cover plate 3. The mounting sleeve 26 has a threaded groove. The mounting plate 27 is fixedly installed on both sides of the bellows 2. The fixing rod 28 passes through the mounting plate 27 and is inserted into the mounting sleeve 26. The elastic plate 29 is arranged on the side wall of the fixing rod 28 along the threaded line.

[0038] A release sleeve 30 is sleeved on the outer side of the fixing rod 28 , and a release groove 31 is formed on the side wall of the release sleeve 30 . The release groove 31 corresponds to the position of the elastic plate 29 .

[0039] A spring 32 is disposed at one end of the release sleeve 30 , and the other end of the spring 32 is connected to the fixing rod 28 .

[0040] A handle 33 is provided at one end of the release sleeve 30 , and the handle 33 slides through the top end of the fixing rod 28 .

[0041] More specifically, when it is necessary to maintain or replace the filter 5 or the filter plate 4 inside the bellows 2, the release sleeve 30 is first pulled by the handle 33, and the release sleeve 30 cooperates with the fixing rod 28 to squeeze the spring 32, and the release sleeve 30 drives the release groove 31 to move, and then the side wall of the release groove 31 squeezes the outer side of the elastic plate 29, so that the elastic plate 29 gathers inwardly, and when the spring 32 is compressed to the limit, the elastic plate 29 no longer engages with the threaded groove provided in the installation sleeve 26, and then the handle 33 is continued to be pulled, and the handle 33 drives the release sleeve 30 and the fixing rod 28 to move out of the installation sleeve 26 and the mounting plate 27 are detached, thereby realizing the quick disassembly of the cover plate 3, and then realizing the quick replacement or maintenance of the filter 5 and the filter plate 4. After the replacement or maintenance is completed, the cover plate 3 is reinstalled on one side of the bellows 2, and then the fixing rod 28 and the release sleeve 30 are inserted into the mounting sleeve 26 through the mounting plate 27 again according to the above process, and then the handle 33 is released, the spring 32 drives the release sleeve 30 to reset, and then the elastic plate 29 will lose the limit of the release groove 31 and automatically reset, and then the elastic plate 29 will be engaged in the threaded groove, thereby realizing the quick installation of the cover plate 3.

[0042] In summary, when the overall equipment is in use or running: when it is necessary to use the equipment to transport fresh air to the interior of the bus, first turn on the fan 1, the fan 1 draws fresh air from the outside into the bellows 2, and the air entering the bellows 2 will first pass through the filter plate 4 to filter out large particles of dust and other foreign matter, and then the air that has passed the initial filtration will pass through the filter 5 to filter out some fine particles, thereby ensuring the cleanliness of the transported air, and then it will be transported to the bus through the air outlet pipe 6. When it is necessary to adjust the fresh air flow rate in the pipe according to demand, turn on the motor 8, the motor 8 drives the driven wheel 10 to rotate through the driving wheel 9 connected to the output end, and then the driven wheel 10 will drive the internal gear 12 to rotate through the rotating sleeve 11, and then the internal gear 12 set on the inner side of the rotating sleeve 11 will drive multiple external gears 13 to rotate synchronously, and then the external gear 13 will drive the screw sleeve 15 to rotate, because the top rod 16 The push rod 16 is limited by the arrangement of the slider 24 and the slide groove 25, and then the push rod 16 will slide along the slider 24 and the slide groove 25, and then the push rod 16 will gradually push the baffle block 18 to slide, and then the baffle block 18 will slide along the matching groove 22, and at the same time, the baffle block 18 will cooperate with the fixed plate 20 to squeeze the push spring 19. Due to the inclined structural design of the matching groove 22, the baffle block 18 will simultaneously move inward during the sliding process, and then multiple top blocks 21 will gradually come together, and then the conical spring 17 connected to one end of the top block 21 will be compressed, so that the gap between the conical springs 17 will gradually narrow, thereby changing the passing area of ​​fresh air, and at the same time, the movement of the baffle block 18 will gradually reduce the cross-sectional area of ​​the corresponding position in the fixed pipe 7, thereby further limiting the passing flow rate of fresh air. After adjusting to the appropriate flow rate, the motor 8 can be turned off.

[0043] When it is necessary to maintain or replace the filter 5 or the filter plate 4 inside the bellows 2, firstly, the release sleeve 30 is pulled by the handle 33, and the release sleeve 30 cooperates with the fixing rod 28 to squeeze the spring 32, and the release sleeve 30 drives the release groove 31 to move, and then the side wall of the release groove 31 squeezes the outer side of the elastic plate 29, so that the elastic plate 29 gathers inwardly, and when the spring 32 is compressed to the limit, the elastic plate 29 is no longer engaged with the threaded groove provided in the installation sleeve 26, and then the handle 33 is continued to be pulled, and the handle 33 drives the release sleeve 30 and the fixing rod 28 to move out of the installation sleeve 26 and The mounting plate 27 is detached from the mounting plate 27, thereby enabling quick disassembly of the cover plate 3, and further enabling quick replacement or maintenance of the filter 5 and the filter plate 4. After replacement or maintenance, the cover plate 3 is reinstalled on one side of the bellows 2, and then the fixing rod 28 and the release sleeve 30 are inserted into the mounting sleeve 26 through the mounting plate 27 again according to the above process, and then the handle 33 is released, and the spring 32 drives the release sleeve 30 to reset, and then the elastic plate 29 will lose the limit of the release groove 31 and automatically reset, and then the elastic plate 29 will be engaged in the threaded groove, thereby achieving quick installation of the cover plate 3.

[0044] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A fresh air mechanism for a roof-mounted air conditioner of a passenger car, comprising a fan (1), characterized in that: The output end of the fan (1) is connected to a filtering device, the filtering device comprising a bellows (2), a cover plate (3), a filter plate (4) and a filter (5), the cover plate (3) being mounted on one side of the bellows (2), the filter (5) being mounted below the filter plate (4), a quick-clamp device being arranged on one side of the cover plate (3), an air outlet pipe (6) being arranged on the output end of the bellows (2), one end of the air outlet pipe (6) being connected to an adjusting device, the adjusting device comprising a fixing pipe (7), a motor (8), a driving wheel (9), a driven wheel (10), a rotating sleeve (11), an internal gear (12), an external gear (13), a connecting plate (14), a screw sleeve (15) and a push rod (16) , a conical spring (17), a flow block (18), a push spring (19), a fixed plate (20) and a top block (21); the motor (8) is connected to the driving wheel (9); the driven wheel (10) is arranged on the outside of the rotating sleeve (11); the rotating sleeve (11) is sleeved on the other end of the fixed tube (7); the internal gear (12) is connected to the inside of the rotating sleeve (11); the external gear (13) is arranged on the outside of the screw sleeve (15); the connecting plate (14) is arranged in the fixed tube (7); the screw sleeve (15) is installed on the connecting plate (14); the top block (21) is connected to the flow block (18) through the conical spring (17); and the two ends of the push spring (19) are respectively connected to the fixed plate (20) and the flow block (18).

2. The fresh air mechanism of a roof-mounted air conditioner for a passenger car according to claim 1 is characterized by: A matching groove (22) is provided in the fixed tube (7), the flow blocking block (18) is slidably arranged in the matching groove (22), and the matching groove (22) is an inclined structure.

3. The fresh air mechanism of the roof-mounted air conditioner of a passenger car according to claim 2 is characterized by: A limiting plate (23) is provided in the fixed tube (7), and the push rod (16) slides through the limiting plate (23).

4. A fresh air mechanism for a roof-mounted air conditioner in a passenger car according to claim 3, characterized in that: A sliding block (24) is provided on the inner side of the limiting plate (23), a sliding groove (25) is provided on the outer side of the push rod (16), and the sliding block (24) is adapted to the sliding groove (25).

5. A fresh air mechanism for a passenger car rooftop air conditioner according to any one of claims 1 to 4, characterized in that: The quick-clamp device comprises a mounting sleeve (26), a mounting plate (27), a fixing rod (28) and an elastic plate (29); the mounting sleeve (26) is fixedly connected to one side of the cover plate (3); the mounting sleeve (26) is provided with a thread groove; the mounting plate (27) is fixedly mounted on both sides of the bellows (2); the fixing rod (28) passes through the mounting plate (27) and is inserted into the mounting sleeve (26); and the elastic plate (29) is arranged on the side wall of the fixing rod (28) along the thread line.

6. A fresh air mechanism for a roof-mounted air conditioner in a passenger car according to claim 5, characterized in that: A release sleeve (30) is sleeved on the outer side of the fixing rod (28), and a release groove (31) is provided on the side wall of the release sleeve (30), and the position of the release groove (31) corresponds to that of the elastic plate (29).

7. A fresh air mechanism for a roof-mounted air conditioner in a passenger car according to claim 6, characterized in that: A spring (32) is provided at one end of the release sleeve (30), and the other end of the spring (32) is connected to the fixing rod (28).

8. The fresh air mechanism of the roof-mounted air conditioner of a passenger car according to claim 7, characterized in that: A handle (33) is provided at one end of the release sleeve (30), and the handle (33) slides through the top end of the fixing rod (28).

Images